17 tools · Unit Converters
Unit Converters tools
Length, speed, temperature, and more — no ads, no math.
Popular in unit converters
Unit Converters
Unit Converter
Free universal unit converter. Length, weight, volume, area, speed, energy, and more. All in one place.
Unit Converters
Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin instantly. Live conversion as you type.
Unit Converters
Length Converter
Convert length units: meters, feet, inches, miles, kilometers, yards. Fast, free, and mobile-friendly.
Unit Converters
Speed Converter
Convert between mph, km/h, m/s, knots, and feet per second. Live conversion, no ads.
Unit Converters
Age Calculator
Calculate exact age in years, months, and days from any birth date to any target date.
Unit Converters
Weight Converter
Convert between kilograms, pounds, ounces, grams, stones, and tons. Instant, free, mobile-friendly.
More unit converters tools
- Time ConverterConvert between seconds, minutes, hours, days, weeks, months, years. Great for time logs and billing.
- Area ConverterConvert between square feet, square meters, acres, hectares, square yards, square miles. Free, fast.
- Volume ConverterConvert between liters, gallons (US/UK), cups, milliliters, pints, fluid ounces, cubic meters. Free converter.
- Data Size ConverterConvert between bytes, kilobytes, megabytes, gigabytes, terabytes, petabytes. Supports binary (KiB) and decimal (KB).
- Energy ConverterConvert between joules, calories, kilocalories, kilowatt-hours, and BTUs. Free, instant.
- Fraction CalculatorAdd, subtract, multiply, or divide fractions — with simplified results and mixed-number conversion. Free math tool.
- Average CalculatorPaste a list of numbers and get the mean, median, mode, range, and sum. Free statistics helper.
- Date Difference CalculatorFind the exact number of days, weeks, months, or years between any two dates. Free, private, mobile-friendly.
- Time Duration CalculatorFind the duration between two times — hours, minutes, seconds. Essential for timesheets, podcasts, travel.
- Prime Number CheckerCheck whether any number is prime. Also shows its factors if composite. Fast in-browser math.
- Ratio CalculatorSimplify a ratio, compare two ratios, or scale one up and down. Handy for recipes, mixing, and design.